Terrell Sinkfield is confident he can run fast at a Northern Iowa pro day March 27. 'The tape shows it. The message is, I'm fast,' he said.

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No matter the merits of the debate, Terrell Sinkfield plans to continue an unlike-ever-before showdown with NFL stopwatches.

Sinkfield caused the social media-sphere to collectively gasp as reports trickled out that the former Northern Iowa football player ran a time of - wait for it - 4.19 seconds in the 40-yard dash during a pro day Monday at the University of Minnesota.

The previous best in the history of the NFL Combine, for a large lump of context: 4.24 by future Pro Bowl running back Chris Johnson in 2008. ...